• 1080p: 4-8 Mbps
• 720p: 2-4 Mbps
• 480p: 0.5-1.5 Mbps
• 360p: 0.3-0.7 Mbps

ffmpeg.input(ts_name).output(
    video_name,
    s='1280x720', # resolution
    crf=28,
    preset='slow', # slow, medium, fast (slower = better compression)
    audio_bitrate='96k' # Compress audio
).run()

• CRF 18: ~8-12 Mbps (1080p) - very high quality
• CRF 23: ~3-6 Mbps (1080p) - default, good quality
• CRF 26: ~2.5-4 Mbps (1080p) - good balance - noticeable compression but still good quality
• CRF 28: ~1.5-4 Mbps (1080p) - noticeable compression, but acceptable
• CRF 32: ~1-2 Mbps (1080p) - lower quality

3 Mbps × 60 seconds = 180 megabits = 22.5 MB

Mbps × 60 seconds ÷ 8 bits/byte = MB per minute

• 1 Mbps = 7.5 MB per minute
• 2 Mbps = 15 MB per minute
• 3 Mbps = 22.5 MB per minute
• 4 Mbps = 30 MB per minute
• 5 Mbps = 37.5 MB per minute

ffmpeg.input(ts_name).output(video_name, s='1280x720').run()

Ffmpeg will:

• Use its default encoding mode (CRF 23 for libx264)
• Automatically use less bitrate for 720p than it would for 1080p
• The bitrate will scale roughly with pixel count

Example:

• If 1080p uses ~3.3 Mbps with CRF 23
• Then 720p would use roughly ~1.5-2 Mbps with CRF 23
• (720p has about 44% the pixels of 1080p)

# 1080p → 720p: expect ~50-60% file size reduction
ffmpeg.input(ts_name).output(video_name, s='1280x720').run()

# 1080p → 480p: expect ~70-80% file size reduction  
ffmpeg.input(ts_name).output(video_name, s='854x480').run()

When accessing the videos available only for members, you need to add youtube_cookies.txt:

• To export cookies install the browser extension "Get cookies.txt LOCALLY" (Chrome/Firefox).
• Go to YouTube while logged in.
• Using the extension export cookies to youtube_cookies.txt.
• Use it:

ydl_opts = {
    'cookiefile': 'youtube_cookies.txt',
    # Re-export the cookies if you see WARNING: [youtube] The provided YouTube account cookies are no longer valid.
    # ... other options ...
  }